[MPICH] Maximum message length

James S Perrin james.s.perrin at manchester.ac.uk
Thu Jan 5 06:14:54 CST 2006


Hi,
	As the in Sends/Recvs message count is defined as an int (32bit) is the maximum 
message count 2^31 or (2^31)/sizeof(datatype) ie the number of bytes is limited 
to 2^31 ? Is this behaviour implementation specific?

	I need to move data > 2^31 on 64bit systems (though this is a computationally 
rare occuarance).

Regards
James
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James S. Perrin,                   | email: james.perrin at manchester.ac.uk
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